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Author  |
Shangina, E. L.; Smirnov, K. V.; Morozov, D. V.; Kovalyuk, V. V.; Gol’tsman, G. N.; Verevkin, A. A.; Toropov, A. I. | ||||
| Title | Frequency bandwidth and conversion loss of a semiconductor heterodyne receiver with phonon cooling of two-dimensional electrons | Type | Journal Article | ||
| Year | 2010 | Publication | Semicond. | Abbreviated Journal | Semicond. |
| Volume | 44 | Issue | 11 | Pages | 1427-1429 |
| Keywords | 2DEG, AlGaAs/GaAs heterostructures mixers | ||||
| Abstract | The temperature and concentration dependences of the frequency bandwidth of terahertz heterodyne AlGaAs/GaAs detectors based on hot electron phenomena with phonon cooling of two-dimensional electrons have been measured by submillimeter spectroscopy with a high time resolution. At a temperature of 4.2 K, the frequency bandwidth at a level of 3 dB (f 3 dB) is varied from 150 to 250 MHz with a change in the concentration n s according to the power law f 3dB ∝ n −0.5 s due to the dominant contribution of piezoelectric phonon scattering. The minimum conversion loss of the semiconductor heterodyne detector is obtained in structures with a high carrier mobility (μ > 3 × 105 cm2 V−1 s−1 at 4.2 K). | ||||
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| ISSN | 1063-7826 | ISBN | Medium | ||
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| Notes | Полоса и потери преобразования полупроводникового смесителя с фононным каналом охлаждения двумерных электронов | Approved | no | ||
| Call Number | Serial | 1216 | |||
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